1. FASTEN SOMETHING [intransitive and transitive] to fasten something, usually with a key, so that other people cannot open it, or to be fastened like this: Did you lock the car? I can’t get this drawer to lock.

2. KEEP IN A SAFE PLACE [transitive always + adverb/preposition] to put something in a place and fasten the door, lid etc with a keylock something in something Lock the cat in the kitchen.

3. FIXED POSITION [intransitive and transitive] to become fixed in one position and impossible to move, or to make something become fixed: The wheels suddenly locked.lock something around/round something He locked his hands around the younger man’s throat. A moment later they were locked in an embrace (=holding each other very tightly in a loving or friendly way). Their eyes locked together (=they could not look away from each other) for an instant.

4. FIXED SITUATION [transitive usually passive] if you are locked in a situation, you cannot get out of itbe locked in/into something The two groups are locked in a vicious cycle of killing. The company is locked into a five-year contract.

5. be locked in battle/combat/dispute etc to be involved in a long, serious argument or fight with someone: They are now locked in a bitter custody battle over the three children.

6. lock arms if people lock arms, they join their arms tightly with the arms of the people on each side: The police locked arms to form a barrier against the protesters.

7. lock horns (with somebody) to argue or fight with someone: The band have now locked horns with their record company over the album.—lockable adjectivelock somebody/something ↔ away phrasal verb

1. to put something in a safe place and lock the door, lid etc Synonym : lock up: He locked his money away in the safe.

2. to put someone in prison Synonym : lock up: I hope they lock him away for years.

3. lock yourself away to keep yourself separate from other people by staying in your room, office etclock in phrasal verb

1. lock somebody in (something) to prevent someone from leaving a room or building by locking the door: She locked herself in.They locked the director in his office.

2. lock something ↔ in to do something so that a price, offer, agreement etc cannot be changed: Sell your stocks now to lock in some of the gains of recent months.

3. lock something ↔ in to make the taste, liquid etc remain in something: This method of cooking locks in the flavour of the meat.lock onto something phrasal verb if a missile or satellite locks onto a target or signal, it finds it and follows it closelylock somebody ↔ out phrasal verb

1. to keep someone out of a place by locking the doorlock somebody ↔ out ofI locked myself out of the house!

2. if employers lock workers out, they do not let them enter their place of work until they accept the employers’ conditions for settling a disagreement ⇒ lockoutlock up phrasal verb

1. to make a building safe by locking the doors, especially at night: I’ll leave you to lock up.lock something ↔ upDon’t forget to lock up the warehouse.

2. lock something ↔ up to put something in a safe place and lock the door, lid etc Synonym : lock away

1. FASTENING [countable] a thing that keeps a door, drawer etc fastened and is usually opened with a key or by moving a small metal bar: I’m sorry, there isn’t a lock on the bathroom door. The key turned stiffly in the lock. a bike lock ⇒ pick a lock at pick1(10)

2. under lock and keya) kept safely in a box, cupboard etc that is locked: Dad keeps all his liquor under lock and key.b) kept in a place such as a prison

3. lock, stock, and barrel including every part of something: He moved the whole company, lock, stock, and barrel, to Mexico.

4. HAIRa)[countable] a small number of hairs on your head that grow and hang togetherlock of He gently pushed a lock of hair from her eyes.b)locks [plural] literary someone’s hair: long flowing locks

5. ON A RIVER ETC [countable] a part of a canal or river that is closed off by gates so that the water level can be raised or lowered to move boats up or down a slope

6. IN A FIGHT [countable] a hold which wrestlers use to prevent their opponent from moving: a head lock

7. VEHICLE [uncountable and countable] British English the degree to which a vehicle’s front wheels can be turned in order to turn the vehicle

lock II. put sb/sth inside sth that is locked ADV. away, in, up I was terrified they would lock me up again. PREP. in I locked myself in the bathroom. PHRASES be safely/securely locked All the valuables were safely locked away.